package com.dgu.jsf.java.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.dgu.jsf.java.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{

	private SessionFactory sf;
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException {
		    try {
		    this.sf.getCurrentSession().beginTransaction();
		    chain.doFilter(servletFilter, servletResponse);
		    this.sf.getCurrentSession().getTransaction().commit();
		    this.sf.getCurrentSession().close();
		    } catch(Throwable e){
		    	try {
					if (this.sf.getCurrentSession().getTransaction().isActive()) {
						this.sf.getCurrentSession().getTransaction().rollback();
					}
				} catch (Throwable e2) {
					e2.printStackTrace();
				}
		    	
		    	throw new ServletException();
		    }
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
		this.sf = HibernateUtil.getSession();
		
	}

}
